My personal thinking is that you grow and change a lot between cycles and a personal statement should reflect that. Finn, even if you feel like you haven't changed much, I know at least two things about you now that nobody could have known at this point last year:
- You did not get in last cycle and had to deal with that
- You took it in stride, are still committed to pursuing the profession and are reapplying
Those are two big differences between you now and you last year, and if you do have to rewrite your PS just keep that in mind. Sometimes a difference of a year doesn't feel like much but I'm positive you have a lot of things you could talk about and reflect on if you did have to rewrite your PS.